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A235552 Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise 1
288, 2878, 33851, 378570, 3824372, 33823017, 265989722, 1875119528, 12064334056, 71470709789, 394816481079, 2046492520798, 10040116514715, 46818554972015, 208795743874615, 893130423787384, 3681115372968065, 14648853777588355 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A235555

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..1..1..0..0..1....0..1..1..0..0....0..1..1..0..1....1..0..1..0..0

..1..0..1..0..0....1..1..0..1..0....0..1..1..0..0....1..1..0..0..1

..0..1..1..1..0....1..1..0..0..0....1..0..0..1..0....1..0..0..0..0

..1..0..0..1..1....0..0..0..0..0....1..0..0..0..0....0..1..1..1..0

CROSSREFS

Sequence in context: A235769 A049230 A322677 * A033692 A182026 A229506

Adjacent sequences:  A235549 A235550 A235551 * A235553 A235554 A235555

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 12 2014

STATUS

approved

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Last modified August 12 04:39 EDT 2020. Contains 336436 sequences. (Running on oeis4.)